- Postero-Lateral Instability:
- expect to find increased varus rotation and external rotation at 30 deg of knee flexion;
- similarly, the same knee flexed to 90 deg will demonstrate decreased varus and external rotaion moments;
- in contrast, when there is increased varus rotation and external rotation moments at both 30 and 90 deg of flexion, then there are tears of
the PCL and posterolateral corner